Adding and Subtracting with Regrouping

Front

What is regrouping in addition?

Back

Regrouping in addition is the process of carrying over a value from one column to the next when the sum of a column exceeds 9.

Front

What is regrouping in subtraction?

Back

Regrouping in subtraction is the process of borrowing from the next column when the top number is smaller than the bottom number in a column.

Front

What does it mean to add?

Back

Adding means to combine two or more numbers to get a total.

Front

What does it mean to subtract?

Back

Subtracting means to take one number away from another.

Front

What is the sum of 27 and 45?

Back

The sum of 27 and 45 is 72.

Front

What is the difference between 85 and 29?

Back

The difference between 85 and 29 is 56.

Front

How do you add 58 and 37 using regrouping?

Back

1. Add the ones: 8 + 7 = 15 (write 5, carry 1). 2. Add the tens: 5 + 3 + 1 = 9. So, 58 + 37 = 95.

Front

How do you subtract 62 from 105 using regrouping?

Back

1. Start with the ones: 5 - 2 = 3. 2. Regroup the tens: 10 - 6 = 4. So, 105 - 62 = 43.

Front

What is a two-digit number?

Back

A two-digit number is a number that has two places, such as 10 to 99.

Front

What is a three-digit number?

Back

A three-digit number is a number that has three places, such as 100 to 999.